(Encyclopedia) Humber, navigable estuary of the Trent and Ouse rivers, c.40 mi (60 km) long and from 1 to 8 mi (1.6–12.9 km) wide, NE England, forming the boundary between between the East Riding of…
(Encyclopedia) DonDondôn [key], river, c.70 mi (110 km) long, rising in the Pennines, N England. It flows SE through Sheffield, then turns NE and flows past Rotherham and Doncaster to the River Ouse…
(Encyclopedia) DoveDovedŭv [key], river, c.40 mi (60 km) long, rising in the Pennines, Derbyshire, central England, and flowing S and SE to the River Trent near Burton upon Trent. It forms much of…